rem(px)
    return (px / 75)rem
reset()
    div,dl,dd,dt,p,ol,ul,li,h1,h2,h3,h4,h5,h6,table,td,tr,dl,dd,dt,span,del,em,strong,s,code,form,input,select,option,button,a,img,footer,header,section,nav,aside,menu,article,figure
        margin 0
        padding 0
        vertical-align baseline
        font inherit
    footer,header,section,nav,aside,menu,article,figure
        display block
        zoom 1
    p
        margin 0
    html
        height 100%
    body
        font-family Arial\,'Microsoft YaHei'\,Helvetica\,'sans-serif'
        max-width rem(750)
        margin 0 auto
        min-height 100%
        box-sizing border-box
        position relative
clearfix()
    &:after
        content ''
        display table
        clear both
topH()
    background url('../images/icon-h1.png') left top repeat-x
    background-size auto 1px
bottomH()
    background url('../images/icon-h.png') left bottom repeat-x
    padding-bottom 1px
    background-size auto 1px
ellipsis()
    overflow hidden
    text-overflow ellipsis
    white-space nowrap
bottomLine()
    background linear-gradient(180deg, #e1e1e1, #e1e1e1, rgba(229, 229, 229, 0)) bottom left no-repeat
    background-size 100% 1px